Problem: You are given three numbers. Is there a way to replace variables A, B and C with these numbers so the equality A + B = C is correct?

Input:

There are three numbers X1, X2 and X3 (1 ≤ Xi ≤ 10^100), each on a separate line of input.

Output:

Output either "YES", if there is a way to substitute variables A, B and C with given numbers so the equality is correct, or "NO" otherwise.

Sample Input:

1

2

3

Output:

YES

Sample Input:

1

2

4

Output

YES

Sample Input:

1

3

5

Output

NO

SAMPLE INPUT
1
2
3

SAMPLE OUTPUT
YES

Solution (in PYTHON):

Solution:
# cook your code here
a=input();
b=input();
c=input();
if (a+b)==c:
  print "YES"
elif (a+c)==b:
  print "YES"
elif (b+c)==a:
    print "YES"
elif (a+a)==b:
    print "YES"
elif (a+a)==c:
    print "YES"
elif (b+b)==c:
    print "YES"
elif (b+b)==a:
    print "YES"
elif (c+c)==a:
    print "YES"
elif (c+c)==b:
    print "YES"
else:
    print "NO"